28680922 has 16 divisors (see below), whose sum is σ = 43690752. Its totient is φ = 14119200.

The previous prime is 28680907. The next prime is 28680929. The reversal of 28680922 is 22908682.

It is not an unprimeable number, because it can be changed into a prime (28680929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47422 + ... + 48022.

It is an arithmetic number, because the mean of its divisors is an integer number (2730672).

Almost surely, 2^28680922 is an apocalyptic number.

28680922 is a deficient number, since it is larger than the sum of its proper divisors (15009830).

28680922 is a wasteful number, since it uses less digits than its factorization.

28680922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 28680922 is about 5355.4572167090. The cubic root of 28680922 is about 306.1007329230.

The spelling of 28680922 in words is "twenty-eight million, six hundred eighty thousand, nine hundred twenty-two".